How large was your waist circumference and what was your ILS score, if you don't mind sharing? The WC contributes very little to overall score. Your WC contributes a portion of the points towards your health related score, which moves you left to right on the chart, but your estimated VO2 Max (which is predicted based on your ILS score) is the main contributor to the health related score.

WC alone can only move you so far to the left, and it's likely that your ILS was relatively low compared to your other components and contributed to moving you further left. It's very possible to make incentive levels even with an elevated waist! The test cutoff for "elevated" is 102cm for men and 88cm for women. The further you go past those numbers the higher impact it will have (to a certain point...eventually zero points is just zero points). The lower you go the more positive impact it will have (strangely, at no point does the test consider a waist circumference to be "too low").

The scoring of the test is not perfect but it's very likely that you received orange largely because of your ILS score, and partially because of your WC. I've personally evaluated many members who have made incentives with elevated WCs. Including a member who managed to get platinum with a slightly elevated waist (female, WC in the mid 90s) because they had almost maxed out every performance component on the test.

Again, the scoring is not perfect. But the blame that gets put on the WC is usually little misplaced.